adding main.go

[ashishkurmi]

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[step-security-bot]

Please find StepSecurity AI-CodeWise code comments below.

Code Comments

main.go

• [High]Prepared Statements
  The code is vulnerable to SQL injection attacks. User input should never be used to build SQL queries directly. Use prepared statements instead of building query strings to prevent SQL injection attacks (OWASP SQL Injection Prevention Cheat Sheet). Replace the line query := fmt.Sprintf("SELECT * FROM users WHERE username='%s'", username) with
  query := "SELECT * FROM users WHERE username = ?" and replace the line rows, err := db.Query(query) with rows, err := db.Query(query, username).
• [Medium]Secure Random Number Generation
  The code uses an insecure method, rand.Seed, for generating random numbers. Secure random number generation is necessary for security-related operations (OWASP Top 10 2017 A6: Security Misconfiguration). Replace rand.Seed(time.Now().UnixNano()) with token, err := rand.Int(rand.Reader, big.NewInt(math.MaxInt64)).
• [Low]Hashed Password Storage
  The code stores passwords in plaintext, making them vulnerable to data breaches or malicious access. Hash passwords with a strong hashing algorithm like bcrypt (OWASP Password Storage Cheat Sheet). Replace the line query := "INSERT INTO users (username, password) VALUES (?, ?)" with query := "INSERT INTO users (username, password) VALUES (?, ?)" and replace the line _, err = db.Exec(query, username, password) with hash, err := bcrypt.GenerateFromPassword([]byte(password), 10) _, err = db.Exec(query, username, hash).

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